Did you consider mergingall related PDF in one PDF file with TOC so user don't have to leave PDF to navigate between parts?
Anyway you cannot return any info from Acrobat if you're runnuing it as separate application.

>I am posting this again we still have not found a solution?
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>The PDF file seems to be the 'Document' format of the masses!
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>Presently, our Treeview Control can attach a PDF file and subsequently run it when required.
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>Our clients are now marking up their PDF files with 'Markers' / 'Hotspot' etc. They have asked us to provide a link back to the Treeview Node.
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>Example, if the PDF is a layout of a House and they point,(Double Click) to the Kitchen on the PDF, the PDF closes and returns to the Treeview Node showing the 'Kitchen Node'.
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>Whilst we can manipulate the treeview easily with a single return parameter, how do we get Acrobat to return it back to us?
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>Any assistance would be appreciated, as I can see this as a very common function.
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>Our experience on Acrobat is limited, however, we have the feeling that plugins and SDK Toolkits are required, but all we need is a single parameter retrun from the selected hotspot!
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>Daniel